Redundant Interchanges

[Georgia Guardrail]

What are some notable redundant interchanges you've come across? 

This can be a single interchange that for instance has a cloverleaf but also a left turn ramp from the other side that goes in the same direction.  It can be an interchange that has something unnecessary on it like a slip ramp that leads to the same road.  Or an interchange boondoggle like that one in Tennessee on I 75 that goes nowhere (forgot what it was called).

Or it can be a pair of interchanges on two nearby freeways that go to the same road and aren't really necessary because they are super close together.

A good example of this would be SR 138's diamond interchanges with I 75 and I 675 in southeast Atlanta near Stockbridge.  There really is no point on having those two interchanges since both I 675 and I 75 intersect after they both intersect with SR 138.  Especially the southbound SR 138 to I 675 ramp and northbound I 675 to SR 138 ramp.

[roadman65]

Well SB I-75 at the northern I-285 exchange near Smyrna has two ramps to I-285 due to a previous ramp merging after the first ramp.

https://goo.gl/maps/SdovWEmMRkSmUk5X6

https://goo.gl/maps/WUzfdPRTrbVx2CtZA

I-95 NB has two ramps to I-195 east in Miami to avoid a weaving situation.
https://www.flickr.com/photos/54480415@N08/51544148721/in/album-72157633808337073/
https://www.flickr.com/photos/54480415@N08/51543388957

[epzik8]

US 40 eastbound at MD 22 in Aberdeen has possible movements to MD 22 east from each ramp, the eastbound and westbound ones.

[zachary_amaryllis]

I-25, at the Park Ave / Coors Field /38th Ave exit (first one S of I-70, SB.. exit 213 maybe?)

You can juke left, and take a flyover to Park Ave, or juke straight, and come down to Fox St, take a left, and it becomes Park Ave. The flyover you missed, comes in from the right.

https://goo.gl/maps/Nr22AwCAQRNpmp1G6

[Dough4872]

DE 1 has two northbound ramps to I-95 northbound: the flyover ramp that splits from the left before the DE 7 interchange and a ramp that splits from the right past DE 7 and Mall Road, the latter ramp allows access to I-95 northbound from DE 7 and the Christiana Mall

[dfilpus]

I-40 has two ramps to NC 54:  273A is a cloverleaf to NC 54 west; 273B leads to a stoplight  at NC 54, where you can make a left turn onto NC 54 west. Usually, 273A is free flowing onto NC 54, but sometimes there is a backup on the 273A ramp and taking 273B can be faster.

[MATraveler128]

US 3/Everett Turnpike in Nashua has two ramps onto the Circumferential Highway with one coming off the on ramp from Spit Brook Rd and another one actually being the exit off the Everett Turnpike.

[paulthemapguy]

Every second interchange in the state of California.  They don't seem to understand the meaning of "limited-access freeway".

[CtrlAltDel]

Does this count?


Exits 361 and 363 on I-70 in Colorado at Limon.

[hbelkins]

US 119 northbound to I-64 in Charleston, WV. There's a right-exit flyover ramp and also a left-turn ramp.

[Georgia Guardrail]

Does this count?


Exits 361 and 363 on I-70 in Colorado at Limon.

Absolutely. 

[GaryV]

Does this count?

Exits 361 and 363 on I-70 in Colorado at Limon.

Absolutely.

Yep. It should be the posterchild for this thread.

[bzakharin]

Exits 26 and 27 on I-295 North both lead to I-76. I understand this is a temporary (if long-term) situation due to construction, but what exactly is the point of having them both open right now?

[thspfc]

Does this count?


Exits 361 and 363 on I-70 in Colorado at Limon.

The fact that I recognized this as Limon before reading the rest of the post tells me that I spend too much time on here.

[wanderer2575]

I posted this in another thread, but with the construction of roundabouts some years ago, there is a redundant loop ramp from nbd M-53 to 26 Mile Road in Washington MI.  The exits are still signed as 23A to ebd and 23B to wbd, but either ramp can be used to either direction.  I was confused when I drove through there because my GPS told me to take the ebd exit even though I wanted to go west, as not using the loop ramp was a few hundred feet shorter.
https://goo.gl/maps/iZSiVbKie3xbHAxL8

There is a redundant loop ramp from sbd Lahser Road to ebd I-696 in Southfield MI.  Could just as easily turn left and use that ramp (although might have to yield for oncoming traffic).  I wonder if that was done because it's a double left-turn lane for the upcoming M-10 interchange.
https://goo.gl/maps/RCjdRD82PCTJ2ATk7

And in Farmington Hills MI, after ebd I-696 exits to ebd M-5, there is a redundant loop ramp back to I-696.  Maybe that doesn't count because it's intended for sbd M-5 traffic to access I-696.
https://goo.gl/maps/1cqhfW4ssMzTkqtd9

Pavement conditions and traffic aside, one could argue the six freeway-to-freeway interchanges in downtown Detroit are close together enough to be considered redundant.
https://goo.gl/maps/KT5XxYxGHoLKAmiQ8

[TheStranger]

The Aerojet Road exit off of US 50 in Rancho Cordova, just east of the Hazel Avenue exit - both of which provide access to Folsom Boulevard.

https://www.google.com/maps/place/Aerojet+Rd+%26+Folsom+Blvd,+California+95742/@38.6310543,-121.2180288,16z/data=!4m6!3m5!1s0x809ae6f883b064fb:0xc776ebde46fc80a3!8m2!3d38.631926!4d-121.2087913!16s%2Fg%2F11gdzz9j3n?entry=ttu

(This actually was useful when a friend and I missed a turn to a shopping center a week ago)

---

No longer in use, but from the 1960s to 1994, I-10 had two ways to reach the southbound Santa Ana Freeway in East Los Angeles:

1. Use the flyover that carries I-10 to the southbound Golden State Freeway, then follow I-5 through the East Los Angeles Interchange to the Santa Ana Freeway
2. Use the flyover at the San Bernardino Split from I-10 west to US 101/Santa Ana Freeway south, and continue as the designation becomes I-5 a mile later

Interestingly, the redundant northbound to eastbound movements still exist to this day: I-5 to I-10 east and I-5 to US 101 to I-10 east.
https://www.google.com/maps/place/Boyle+Heights,+Los+Angeles,+CA/@34.0429127,-118.2270602,14z/data=!4m6!3m5!1s0x80c2c6029c9a59e9:0xec9ea70c76393a94!8m2!3d34.0297895!4d-118.2117257!16zL20vMDIzN204?entry=ttu

---

Nearby the above example is one that actually was useful years ago to bypass construction traffic:

from I-710 north, one can get to I-5 (and US 101 eventually) north through the following nearby methods:
1. Directly to I-5 north
2. Via Route 60 west
3. Via I-10 west
https://www.google.com/maps/place/Boyle+Heights,+Los+Angeles,+CA/@34.0407079,-118.1907538,13z/data=!4m6!3m5!1s0x80c2c6029c9a59e9:0xec9ea70c76393a94!8m2!3d34.0297895!4d-118.2117257!16zL20vMDIzN204?entry=ttu

[vdeane]

NY 31 WB has two ramps to I-590 south.  The one that's a left turn was added in recent years at the same time they reduced the EB direction from three lanes to two from I-590 to NY 65 and adding a light there; previously, that ramp only served EB traffic.

[milbfan]

Not sure if this would qualify, but I'll explain:  I-65 North at I-64/I-71 in Louisville right before going over into Indiana.

You can take the exit, which leads you to a ramp from a previous exit's feed-on.  Stay in the far right lane, and you end up back on I-65 on the Lincoln Bridge going into Indiana and over the Ohio River.  Apparently easier access to Exit 0, as Waze told me, but you could have gotten over however many lanes without much of a problem all the same.

[tchafe1978]

https://www.google.com/maps/place/West+Bend,+WI/@43.281123,-88.1862574,2143m/data=!3m1!1e3!4m6!3m5!1s0x880458d418f43ee9:0xd0ca372bda321e30!8m2!3d43.4252776!4d-88.1834277!16zL20vMDFtbnli?entry=ttu

Just north of the I-41/US-45 split near West Bend, WI WI 145 interchanges with both freeways.

[CtrlAltDel]

Not sure if this would qualify, but I'll explain:  I-65 North at I-64/I-71 in Louisville right before going over into Indiana.

You can take the exit, which leads you to a ramp from a previous exit's feed-on.  Stay in the far right lane, and you end up back on I-65 on the Lincoln Bridge going into Indiana and over the Ohio River.  Apparently easier access to Exit 0, as Waze told me, but you could have gotten over however many lanes without much of a problem all the same.

Northbound I-55 in Illinois at the Mississippi River is similar. Exit 1 leads to IL-3, Tudor Avenue, and Fourth Street, before merging back onto I-55. It comes in handy since in Saint Louis, I-55 merges onto I-44, right at the beginning of the bridge, and it can be difficult to get over to stay on "official" I-55 if there's traffic.


Also similar to this is exit 137 on westbound I-88 in the Chicago suburbs. It leads to a loop ramp to IL-83 south, but it branches to lead right back to I-88. Traditionally, I take this when I'm going to my sister's house on Christmas Eve. (I couldn't tell you why.)


I suppose that any CD setup would also work, but these are somewhat unique.

[jeffandnicole]

Exits 26 and 27 on I-295 North both lead to I-76. I understand this is a temporary (if long-term) situation due to construction, but what exactly is the point of having them both open right now?

During the current construction, they decided to keep both access points since it was determined one would frequently need to be closed due to construction activity.

What NJDOT *should* have done at that point was provide advanced signing informing motorists the optimal exit to take if one wanted to ultimately go to the Walt Whitman Bridge (Exit 26) or US 130/I-676 (Exit 27).  And provided better signage based on when one of the exits is closed due to that construction activity.

Instead, NJDOT did none of that, and instead provided motorists with BGS signage at the 2 mile, 1 mile, and 1/2 mile points informing them to take Exit 26 for I-76 to I-676.  Then at the 500 Foot point, they provided some confusing signage which informs motorists to take Exit 26 for I-76 to I-676 while adding a pull-thru sign with a vague reference that suggests continuing on I-295 will take motorists to I-76: https://goo.gl/maps/PTdyEGGSZVjeqTvx7 , then just as they reach the Exit 26 decision point, they are greeted with a sign informing them to take Exit 27 for I-76 to I-676, omitting the overhead BGS for Exit 26: https://goo.gl/maps/ujamfsnZHRdaWjGP9 . 

Everyday motorists know what to do.  Motorists unfamiliar with the area are seen quickly cutting across the gore point at the last moment trying to figure out what to do.

[roadman65]

Doesn’t US 29 in Elliicot City, MD have two ramps to I-70 westbound? If I recall there is one on the right and one on the left heading north.

Edit: According to this map. Yes
https://www.google.com/maps/place/Ellicott+City,+MD/@39.2983254,-76.8265766,17.67z/data=!4m6!3m5!1s0x89c8202b017c6f07:0x71219558c723760!8m2!3d39.2673283!4d-76.7983067!16zL20vMHR2eTI?entry=ttu

https://goo.gl/maps/TtWYVHcjQA8RPGGR9
GSV shows them both.

[sprjus4]

US-460 at I-81 in Christiansburg has two redundant ramps. Loop ramps exist for traffic on US-460 East towards I-81 North, and for I-81 North towards US-460 West, however traffic can also use the outer ramps by turning left, as turn lanes and a median break allow.

https://maps.app.goo.gl/xMY8VZaSa3kSkXxU7?g_st=ic

[roadman65]

The infamous South of The Border Interchange at the NC-SC Line has two SB I-95 ramps to US 301/501 SB. You have the loop ramp and the outer as well where you can turn left at the end of the ramp.

Billboards for the Tourist Trap approaching the exchange would inform motorists that SOB was " The Next 2 Exits."
https://www.google.com/maps/place/Dillon,+SC+29536/@34.5032383,-79.3106026,16.41z/data=!4m6!3m5!1s0x89aacab066ffbc27:0x658bc9252fd76235!8m2!3d34.4165505!4d-79.3711579!16zL20vMF9sZDA?entry=ttu

Stand corrected. For both NB and SB ramps allow left turns.
https://goo.gl/maps/EKMJGx11by6X4iFP6

[Amaury]

I don't think Washington has any.

Disclaimer: While I have driven all interstates and US highways in Washington, I haven't driven all state routes in Washington. So, this is just what I think.